How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Mike Your Own Question

Mike
Mike, Mac Medic
Category: Mac
Satisfied Customers: 6732
Experience:  Over 20 years IT experience with Apple computers in publishing, marketing and design.
25267123
Type Your Mac Question Here...
Mike is online now
A new question is answered every 9 seconds

MPB not detecting external monitor

Customer Question

MPB not detecting external monitor
Submitted: 1 year ago.
Category: Mac
Expert:  Mike replied 1 year ago.
Please go to the Apple logo on the upper left of the screen, go to About This Mac (DO NOT Select More Info), and tell me the Version (under Mac OS X), the Processor and the Memory, it is all right there.
Customer: replied 1 year ago.

version 10.6.8


processor 2.4 GHz Intel Core i5


4GB 1067 MhZ DDR3


startup Disk Macintosh HD

Expert:  Mike replied 1 year ago.
OK try this:

Resetting the SMC & PRAM on portables with a battery you should not remove on your own
1. Shut down the computer.
2. Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
3. On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
4. Release all the keys and the power button at the same time.
5. Press the power button to turn on the computer.
6. Press and hold the Command-Option-P-R keys before the gray screen appears.
7. Hold the keys down until the computer restarts.
8. Release the keys.
Expert:  Mike replied 1 year ago.
Please come back if that didn't work
Customer: replied 1 year ago.

I tried this twice, it didnot work. The screen flashes blue but it doesnot show up on the external screen. When I open Display tab in System preferences, it doesn't show the arrangement tab nor the mirror box.


It is still the same problem. Why did this start happening all of a sudden while it used to work fine before? and Why didnot your technique work? What else can we try?


thanks

Expert:  Mike replied 1 year ago.
So it was working previously? What model is the monitor and how is it connected?
Customer: replied 1 year ago.

The monitor is an ACER but I also have the same problem with the HD TV. Both used to work using an HDMI connected to the white square adapter that comes with the laptop. mini VGA?


I have 2 different HDMIs on each and so it is not the cable and it is not the external monitor, because both of those used to work before. Do I have to pay everytime I ask one question? this is getting quite expensive for the same question. Do you think you can help?

Expert:  Mike replied 1 year ago.
No you only pay once when you are satisfied. Ok.

I want you to check some things that may or may not be affecting the situation. It is posted as an Answer because of site rules but it is really just a diagnostic test. So please don't Rate to Finish just Reply to Expert when done.

Open Macintosh HD / Applications / Utilities and double click Disk Utility. Highlight your hard drive, usually Macintosh HD, and click on Verify Disk on the far right. If that is OK in green type, then click on Repair Permissions on the left.

Note: If Verify Disk is not OK try to Repair. If Repair is successful then Repair Permissions if it is not successful let me know.
Customer: replied 1 year ago.

ok, it says 22 minutes. oh it just turned green

Expert:  Mike replied 1 year ago.
OK Repair Permissions
Customer: replied 1 year ago.

repair in processWink

Expert:  Mike replied 1 year ago.
Ok so you say it used to work with both TV and monitor and now it works with neither correct? And you have different HDMI cables for each?
Customer: replied 1 year ago.

right.

 

Is it ok if I have 2 external drives connected to the laptop while this repair is happening?

it is estimating 42 min.

Expert:  Mike replied 1 year ago.
OK then common sense tells us it is either the adapter or the computer. When that is done connect the monitor and check all the connections and reseat them, make sure they are tight. Then with the monitor on restart the computer
Customer: replied 1 year ago.

it says permissions repair complete.


 


I will double check on the connections, but I have tried that too before. It doesnot make sense when I've moved the laptop to another power outlet and connected it through another HDMI to the TV and got the same solution. There must be something else.


 

Expert:  Mike replied 1 year ago.
Do you have any other Macs so we can test the adapter?
Customer: replied 1 year ago.

I have a G5 tower that i barely use anymore, but we can try. it used to connect to 2 screens, but I can;t remember what connections I used.


shall I turn it on and connect the adapter in the back? I think I only have 1 monitor that has an HDMI port.


 

Expert:  Mike replied 1 year ago.
I doubt it has the connection you need. What model is the adapter?
Customer: replied 1 year ago.

oh you're right, the adapter will not work.


the adapter says Dynex Mini DisplayPort to HDMI adapter

Expert:  Mike replied 1 year ago.
Right there is no mini-display port on an old G5. Go here and reinstall this then restart:

http://support.apple.com/kb/dl1399
Customer: replied 1 year ago.

ok, working on that now.

Expert:  Mike replied 1 year ago.
Let me know
Customer: replied 1 year ago.

ok now what. it's not even detecting the external display at all. I kept the connection, the adapter and the power all plugged in while I restarted after I reinstalled Leopard.

 

do you have other tricks up your sleeve?Frown

Expert:  Mike replied 1 year ago.
Sorry what do you mean... is was not detecting the display before correct? Wat is different?
Customer: replied 1 year ago.

just reconfirming that it is the same situation. it wasn't detecting and it still is not detecting. what do we do?

Expert:  Mike replied 1 year ago.
Ok with the monitor connected go to Apple Logo to About this Mac then More Info, click on Displays on the left. What is listed on the right? You may be able to copy and paste it here.
Customer: replied 1 year ago.

Intel HD Graphics:



Chipset Model: Intel HD Graphics


Type: GPU


Bus: Built-In


VRAM (Total): 288 MB


Vendor: Intel (0x8086)


Device ID: 0x0046


Revision ID: 0x0018


gMux Version: 1.9.21


Displays:


Display Connector:


Status: No Display Connected



==


NVIDIA GeForce GT 330M:



Chipset Model: NVIDIA GeForce GT 330M


Type: GPU


Bus: PCIe


PCIe Lane Width: x16


VRAM (Total): 256 MB


Vendor: NVIDIA (0x10de)


Device ID: 0x0a29


Revision ID: 0x00a2


ROM Revision: 3560


gMux Version: 1.9.21


Displays:


Color LCD:


Resolution: 1440 x 900


Pixel Depth: 32-Bit Color (ARGB8888)


Main Display: Yes


Mirror: Off


Online: Yes


Built-In: Yes


Display Connector:


Status: No Display Connected


Expert:  Mike replied 1 year ago.
It is not seeing the adapter. If you have been plugging and unplugging it a lot it may be dirty. I suggest you get an air can and blow out the Mini Display port and make sure all the other connectors are clean. If that doesn't work OK I would say the adapter is faulty. Where did you get it?
Customer: replied 1 year ago.

I doubt it, the ports look clean. I rarely transport my laptop and especially not this adapter. It is the original adapter I received when purchasing the laptop 2 years ago.


 


 

Expert:  Mike replied 1 year ago.
Ok then I suggest you take it to Apple, I know that's not what you want to hear but it is either the computer hardware or the adapter that has failed from what we have done. I hope you bought the Applecare. Good luck.
Customer: replied 1 year ago.

if you think it is a possibility it is the adapter, I can either buy a new adapter, or borrow one from a friend and try that. if it is not the adapter, then what could be wrong?


Why do so many people say online they have the same problem?


 


thanks

Expert:  Mike replied 1 year ago.
Yes if you can that would be a good... idea borrow and adapter from a friend and if that doesn't work then you know it is the computer hardware. Or better yet try your adapter on their computer first. You can let me know later if you want.
Customer: replied 1 year ago.

ok this will have to wait a couple of days. and NO i don't have applecare. it might be like those folks say online, that it is a bug that Apple needs to fix. so may be there is nothing I can do about it. I just have the give up on the notion of using an external monitor. What a shame.


thanks for trying

Expert:  Mike replied 1 year ago.
Ok it is one of those and without another computer to check it is hard fro me to know. If you have an external hard drive we can use we could rule out a software problem by installing a clean system on it and booting from it. If that didn't work then it is DEFINITELY a hardware failure. Good luck and let me know
Customer: replied 1 year ago.

so if I tried the adapter on my friend's system and it does work? Then it means it is the hardware? and in that case, is there anything that could be done?


 


 

Expert:  Mike replied 1 year ago.
No in that case it is either a software issue or the hardware but I would guess hardware. Only installing a clean system can tell that.
Customer: replied 1 year ago.

ok thank you for now. This was hard work so far today

Attachments are only available to registered users.

Register Here

Attachments are only available to registered users.

Register Here

Attachments are only available to registered users.

Register Here
View Full Image

Attachments are only available to registered users.

Register Here

Expert:  Mike replied 1 year ago.
OK let me know

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • Hi John, Thank you for your expertise and, more important, for your kindness because they make me, almost, look forward to my next computer problem. After the next problem comes, I'll be delighted to correspond again with you. I'm told that I excel at programing. But system administration has never been one of my talents. So it's great to have an expert to rely on when the computer decides to stump me. God bless, Bill Bill M. Schenectady, New York
< Last | Next >
  • Hi John, Thank you for your expertise and, more important, for your kindness because they make me, almost, look forward to my next computer problem. After the next problem comes, I'll be delighted to correspond again with you. I'm told that I excel at programing. But system administration has never been one of my talents. So it's great to have an expert to rely on when the computer decides to stump me. God bless, Bill Bill M. Schenectady, New York
  • The Expert answered my Mac question and was patient. He answered in a thorough and timely manner, keeping the response on a level that could understand. Thank you! Frank Canada
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer New York
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
 
 
 

Meet The Experts:

 
 
 
  • Mike

    Mac Medic

    Satisfied Customers:

    6256
    Over 20 years IT experience with Apple computers in publishing, marketing and design.
< Last | Next >
  • http://ww2.justanswer.com/uploads/macthelife/2009-10-20_1899_mikesebaharsquare64.jpg Mike's Avatar

    Mike

    Mac Medic

    Satisfied Customers:

    6256
    Over 20 years IT experience with Apple computers in publishing, marketing and design.
  • http://ww2.justanswer.com/uploads/AS/ashiknasameen/2012-5-15_141836_final2.64x64.jpg Ashik's Avatar

    Ashik

    Mac Helper

    Satisfied Customers:

    5282
    7+ Years of Experience in troubleshooting Macs, iPhone, iPad, iPod etc
  • http://ww2.justanswer.com/uploads/DP/dpean/2012-6-6_172828_avatorme1.64x64.JPG Daniel's Avatar

    Daniel

    Mac Genius

    Satisfied Customers:

    4670
    Apple certified on desktop and portable, help desk qualified. Have owned and used Macs since 1989.
  • http://ww2.justanswer.com/uploads/VI/vinodvmenon2005/1.64x64.jpg Vinod Menon's Avatar

    Vinod Menon

    Support Specialist

    Satisfied Customers:

    2068
    worked as a Tech support Associate for Apple products
  • http://ww2.justanswer.com/uploads/BE/beboo/2011-1-14_201648_n5063313142021801763.64x64.jpg Brandon M.'s Avatar

    Brandon M.

    Mac Support Specialist

    Satisfied Customers:

    1501
    10+ Years Mac Support as contractor and currently an IT Manager for law firm
  • http://ww2.justanswer.com/uploads/MA/MacDruid/IMG_0232.64x64.JPG John T. F.'s Avatar

    John T. F.

    Mac Druid

    Satisfied Customers:

    1408
    20+ years in the computer/Mac industry
  • http://ww2.justanswer.com/uploads/MA/MacHelpdesk/1d2d506.64x64.jpg David's Avatar

    David

    Mac Support Specialist

    Satisfied Customers:

    1236
    BSc, H.Dip, Apple Certified